IPV4: fib_trie use vmalloc for large tnodes

Browse source

Use vmalloc rather than alloc_pages to avoid wasting memory.
The problem is that tnode structure has a power of 2 sized array,
plus a header. So the current code wastes almost half the memory
allocated because it always needs the next bigger size to hold
that small header.

This is similar to an earlier patch by Eric, but instead of a list
and lock, I used a workqueue to handle the fact that vfree can't
be done in interrupt context.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Stephen Hemminger 2008-04-10 02:56:38 -07:00 • committed by David S. Miller

parent 5c06f510a2

commit 15be75cdb5

1 changed files with 15 additions and 10 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

25

net/ipv4/fib_trie.c

View file